Nebula support

[elias-fox]

One of my favorite youtubers posts first on Nebula, then about a week later posts on Youtube. There's also some content from him that is ONLY on Nebula. It would be nice if I could point Podsync at the Nebula channel instead to get the content. yt-dlp does support downloading a Nebula channel if you provide credentials, so it should be in the realm of possibility.

[selareid]

I'm currently testing a fork which adds Nebula support. See here if interested. Planning to open a PR eventually.